5.0. Photoelectric Sensors. Technical Reference. Introduction

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1 .0 Technical Reference Photoelectric sensors use light to detect the presence or absence of an object. The main advantages of photoelectric sensors are noncontact sensing of objects and greatly extended sensing ranges. Choosing the Right There are many factors to consider when choosing a photoelectric sensor. The specific demands of your application will dictate the sensor required for the job. Some of the questions you should consider, and suggested areas to find more information: What range is required (how far is the sensor from the object to be detected)? (See Modes of Detection, Range and Excess Gain ) What is the nature of the environment? (See Contamination ) What access do you have to both sides of the object to be detected (is wiring possible on one or both sides of the object)? (See Modes of Detection ) What size is the object being detected? (See Modes of Detection ) Is the object consistent in size, shape, and reflectivity? (See Modes of Detection, Perfect Prox ) What are the mechanical and electrical requirements? (Check the electrical specifications of the desired sensor) What kind of output do you need? (Check the electrical specifications of the desired sensor) Are logic functions needed at the sensing point? (If so, look for sensors with logic modules or built-in logic functions) V8-T-4 Volume 8 Sensing Solutions CA E February

2 .0 Modes of Detection Thru-Beam and detector elements are mounted in separate housings and aligned facing each other across an area which the target object crosses. Detection occurs when an object blocks the entire effective beam (the column of light that travels in a straight line between lenses). See Page V8-T Reflex The source and detector are mounted in a single sensor housing and are positioned parallel to one another on the same side of the object to be detected. The light beam is transmitted from the source to a retroreflector that returns the light to the detector. Detection occurs when the target object blocks the entire effective beam. See Page V8-T Reflex Detection Mode Diffuse Reflective The source and detector elements are mounted in a single sensor housing and are positioned on the same side of the object to be detected and aligned with crossed fields of view. When the target moves into this area light from the source is reflected off the target surface back to the detector and detection occurs. See Page V8-T Diffuse Reflective Detection Mode Range Each sensor listed in this catalog has a specific operating range. In general, thru-beam sensors offer the greatest range (most power), followed by reflex and then diffuse reflective sensors. Operating ranges vary, and there is some overlap among types and models. See Applying Excess Gain on Page V8-T Excess Gain Excess gain is a measure of the sensing power available in excess of that required to detect an object. The following excess gain chart shows this measurement graphically. Find your required range on the x-axis of the graph. Then move up to the Reflex Beam Complete No Object Present Object Detected Retroreflector curve to read the excess gain value from the y-axis. An excess gain value of 1 is the minimum level required for sensor operation. Eaton normally recommends excess gain levels 10 for reliable sensor operation. See Page V8-T Diffuse Reflective Photoelectric Excess Gain Graph Contamination The chart on Page V8-T12-32 shows the excess gain recommended in environments with varying levels of contamination for each sensing mode. Beam Not Complete No Object Present EXSS GAIN Object Detected RANGE (mm) RANGE (feet) Perfect Prox Fixed Focus Perfect Prox Background Perfect Prox is a special type of diffuse reflective sensor that combines extremely high sensing power (excess gain) with a sharp optical cutoff. This allows the sensor to reliably detect targets regardless of variations in color, reflectance, contrast or surface shape, while ignoring background objects that are just slightly beyond the target range. See Page V8-T Note: The excess gain charts in this catalog represent the minimum excess gain provided by the sensor (unless otherwise noted). Actual performance may be better. Volume 8 Sensing Solutions CA E February V8-T-

3 .0 Product Selection Guide Enhanced 0 Series s NanoView Series s IntelliView Series s SM Series s Page V8-T-9 The Enhanced 0 Series family provides outstanding optical performance and application flexibility in a self-contained, industry-standard package. Thru-beam: 200 and 00 ft Reflex: 30 ft Polarized reflex: 16 ft Diffuse reflective: and 10 ft Clear object detector: 4 in Infrared fiber optic: range varies with fiber Visible fiber optic: range varies with fiber High optical performance including 10 ft diffuse and 00 ft thru-beam versions Output options include a high-current 10 Amp SPDT relay Built-in light/dark selection on all models Logic options include ON-delay, OFF-delay and one-shot delay Multiple connector and cable options Industry standard package size Vac and Vdc; Vdc Selectable light or dark operate DC units: 20 ma AC/DC units: 300 ma to 10A IP67, IP69K DC operation: 2 ms AC operation: 1 ms CSA Approved Certified to UL Standard, UL 08 Page V8-T-27 The NanoView Series from Eaton is a family of miniature rectangular photoelectric sensors designed for optimum value and sensing performance in a wide range of applications. Thru-beam: 20 ft Polarized reflex: 8.2 ft Diffuse reflective: 13 in Fixed focus diffuse: 4 in Clear object detector: 2.6 ft Less than 1. in long and half an in deep Fixed focus diffuse models sense very small targets at a 4-in focal point Clear object detection models are ideal for sensing plastic bottles, molds, cartons, films and glass objects Input voltage Vdc Output saturation voltage 2V max. Thru-beam: IP67 Polarized reflex: IP66 Diffuse reflective: IP66 Fixed focus diffuse: IP67 Clear object detector: IP66 1 ms max. cul Listed Page V8-T-33 The IntelliView Series from Eaton is a family of compact, high performance specialty photoelectric sensors designed to solve a wide array of sensing challenges. Foreground/background suppression Distance sensing Color, contrast, luminescence, and grayscale sensing Sensing technologies for detecting color, contrast, luminescence and distance with great accuracy Available in either compact rectangular or flat-tubular package sizes Most models include a teach mode, allowing for quick and simple installation and setup For the first time, Eaton offers a fully fieldadjustable background suppression photoelectric sensor capable of detecting targets as far as 3.9 ft (47 in) away Input voltage Foreground models: Vdc Distance models: Vdc Output saturation voltage All models: < 2V max. Foreground models: E7-PPA_: IP6 E7-PP1_: IP67 Distance models: IP67 Varies by model c Page V8-T-48 SM Series photoelectric sensors provide high performance and ease of use in an economical, compact package. Thru-beam: 0 ft Diffuse reflective: 8 in Perfect Prox background rejection: 2 and 4 in Highly visible LED indicators for power, output and alignment (Lock ) Lock simplifies setup and ensures that the sensor operates at the highest level of reliability possible Perfect Prox models sense different colored targets at the same range and ignore objects in the background Visible beam on all models lets you see exactly where the sensor is pointing Small size Reverse polarity, overload and short circuit protection on all models Vac and 18 0 Vdc; Vdc AC/DC units 200 ma DC units 100 ma (NPN or PNP) NEMA 1, 3, 4, 4X, 6, 6P, 12 and 13 IP68, IP69K DC operation: 1 ms AC operation: 16 ms c V8-T-6 Volume 8 Sensing Solutions CA E February

4 .0 Comet Series s Prism Series s OEM Prism Series s E8 Harsh Duty Series s Page V8-T-4 This high performance, 18 mm tubular sensor family features a wide variety of models in all sensing modes to solve all of your sensing problems. Thru-beam: 20 and 80 ft Reflex: 2 ft Polarized reflex: 1 and 10 ft Diffuse reflective: 8 and 24 in Focused diffuse reflective: 1.6 in See Page V8-T-4 for wide angle diffuse and Perfect Prox information Available in universal voltage AC/DC versions as well as DC only models Short circuit protection on all models RIM (Reaction Injection Molding) process completely encapsulates circuits and produces a rugged package Vac and 18 0 Vdc Vac and 1 30 Vdc; Vdc Selectable light or dark operate AC/DC units 300 ma DC units 20 ma (NPN), 100 ma (PNP) NEMA 1, 2, 3, 4, 4X, 6, 12, 13 and IP69K DC operation: 1 ms/ac operation: 10 ms 2W AC/DC operation: 32 ms UL Recognized cul Recognized Page V8-T-69 Prism is a cost-effective line of 18 mm tubular photoelectric sensors with twice the optical gain of other sensors in this product class. Thru-beam: 20 ft Reflex: 1 ft Diffuse reflective: 8 in Glass fiber optic: range varies with fiber Isolated output simplifies wiring and allows each sensor to switch AC or DC loads, sink or source Forward or right angle viewing units have identical optical performance Short circuit protection for loads less than 32 Vac or Vdc High noise immunity AC/DC and DC-only versions available Vac and 1 30 Vdc; Vdc Isolated VMOS solid-state relay output 80 ma AC load 110 ma at 132 Vdc 3 ms UL Recognized cul Recognized Page V8-T-78 OEM Prism s are similar to our standard cost-effective Prism family and are optimized for high volume OEM use. Diffuse reflective: 8 and 24 in Forward or right angle viewing units have identical optical performance s are shipped bulk-packaged for the convenience of high volume users Dual discrete outputs for simple wiring All models Vdc only to meet the evolving needs of your customers Vdc 100 ma 1.2 ms Page V8-T-84 E8 Harsh Duty were designed to withstand your harshest physical, chemical and optical environments, 18 and 30 mm tubular enclosures. Thru-beam: 800 ft Reflex: 9 ft Polarized reflex: 34 ft Perfect Prox background rejection: 2, 4, 6 and 11 in Designed to be the most rugged photoelectric sensor available Perfect Prox background rejection technology for unmatched optical performance Output status indictor is the brightest available and is visible from any angle and in any lighting condition Available in universal voltage AC/DC versions as well as DC only models 18 mm and 30 mm models available See Page V8-T-84 for more information AC/DC units 300 ma (100 ma for 18 mm diameter units) DC units 20 ma (NPN), 100 ma (PNP) NEMA 1, 2, 3, 3R, 3S, 4, 4X, 6, 6P, 12, 12K, 13 and IP69K 2 ms to 3 ms c Volume 8 Sensing Solutions CA E February V8-T-7

5 .0 E67 Long Range Perfect Prox Series s Page V8-T-93 This is the highest performance long-range sensor you can buy with background rejection. Perfect Prox 24 to 96 in Standard model pre-set at 6 ft. Fixed ranges of 2 8 ft are available. E1 Limit Switch Style, Modular s Page V8-T-97 This versatile sensing family features modular construction, a variety of operating modes and a familiar limit switch style housing. Thru-beam: 300 ft Reflex: 18 and 3 ft Polarized reflex: 1 ft Diffuse reflective: 8, 18 and 40 in Glass fiber optic: range varies with fiber Legacy Products See Tab 11 for product information and ordering information for these legacy products: E8 18 mm Tubular Series E64 Terminal Base Series E6 Miniature Series 11 Series 20 Series 0 Series Series 60 Series 70 Series 80 Series Extended sensing ranges (up to 8 ft) available with background rejection technology No user adjustments required Dual indicators communicate both output and power status from easy-to-see location on the top of the sensor AC/DC models offer isolated contact output for wiring flexibility DC sensors offer both NPN and PNP output Two mounting options for maximum flexibility Vdc and Vac/dc NPN and PNP (DC) Solid-state relay, 100V isolation (AC/DC) 100 ma DC 7 ma AC/DC 0 ms (AC/DC) and 1 ms (DC) Modular construction consisting of a head, sensor body and receptacle Most E1 photoelectric and inductive heads are interchangeable on all E1 sensor bodies for substantial inventory reduction Same general configurations and dimensions as the E0 limit switch Order as complete assemblies or components for stocking and manufacturing flexibility Keyed, for directional head positioning Vac/dc; 120 Vac; Vdc NO or NC (programmable); or NO and NC (complementary) sensor bodies are available AC 1.0A continuous DC 0.6A continuous NEMA 3, 3S, 4, 4X, 6, 6P and 13 Class I, II, III, Division 2, Groups A, B, C, D, F and G (conduit entry only) 1 ms to 30 ms CSA Certified (where shown) V8-T-8 Volume 8 Sensing Solutions CA E February